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Core i7-7700HQ vs i3-7100U


Description
Both models i7-7700HQ and i3-7100U are based on Kaby Lake architecture.

The first Kaby Lake CPU was released in August 2016. It uses a 14 nm process and was the first architecture in breaking the previous tick-tock model. Actually, it is not that different from the preceding Skylake: it has 64kB of L1 cache and 256kB L2 cache per core.

Using the multithread performance as a reference, the i7-7700HQ gets a score of 208.3 k points while the i3-7100U gets 79.6 k points.

Summarizing, the i7-7700HQ is 2.6 times faster than the i3-7100U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906e9
806e9
Core
Kaby Lake-H
Kaby Lake-U
Architecture
Base frecuency
2.8 GHz
2.4 GHz
Boost frecuency
3.8 GHz
2.4 GHz
Socket
BGA1440
BGA 1356
Cores/Threads
4/8
2/4
TDP
45 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
6144 kB
3072 kB
Date
January 2017
August 2016
Mean monothread perf.
56.29k points
33.38k points
Mean multithread perf.
208.33k points
79.6k points

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i7-7700HQ
i3-7100U
Test#1 (Integers)
3.82k
2.41k (x0.63)
Test#2 (FP)
15.49k
9.77k (x0.63)
Test#3 (Generic, ZIP)
4.96k
3.13k (x0.63)
Test#1 (Memory)
8.82k
3.55k (x0.4)
TOTAL
33.09k
18.86k (x0.57)

Multithread

i7-7700HQ

i3-7100U
Test#1 (Integers)
14.15k
5k (x0.35)
Test#2 (FP)
65.81k
21.48k (x0.33)
Test#3 (Generic, ZIP)
22.41k
7.39k (x0.33)
Test#1 (Memory)
5.21k
3.18k (x0.61)
TOTAL
107.57k
37.05k (x0.34)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-7700HQ
i3-7100U
Test#1 (Integers)
13.75k
8.66k (x0.63)
Test#2 (FP)
19.69k
12.31k (x0.62)
Test#3 (Generic, ZIP)
5.19k
3.28k (x0.63)
Test#1 (Memory)
8.92k
3.92k (x0.44)
TOTAL
47.55k
28.16k (x0.59)

Multithread

i7-7700HQ

i3-7100U
Test#1 (Integers)
52.55k
17.87k (x0.34)
Test#2 (FP)
86.47k
28.59k (x0.33)
Test#3 (Generic, ZIP)
23.02k
7.68k (x0.33)
Test#1 (Memory)
5.4k
3.15k (x0.58)
TOTAL
167.43k
57.28k (x0.34)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i7-7700HQ
i3-7100U
Test#1 (Integers)
13k
8.76k (x0.67)
Test#2 (FP)
20.34k
13.49k (x0.66)
Test#3 (Generic, ZIP)
4.77k
3.21k (x0.67)
Test#1 (Memory)
6.95k
3.9k (x0.56)
TOTAL
45.05k
29.36k (x0.65)

Multithread

i7-7700HQ

i3-7100U
Test#1 (Integers)
52.7k
18.33k (x0.35)
Test#2 (FP)
89.69k
31.08k (x0.35)
Test#3 (Generic, ZIP)
22.49k
7.5k (x0.33)
Test#1 (Memory)
4.3k
3.61k (x0.84)
TOTAL
169.17k
60.52k (x0.36)

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i7-7700HQ
i3-7100U
Test#1 (Integers)
23.27k
13.46k (x0.58)
Test#2 (FP)
20.35k
13.45k (x0.66)
Test#3 (Generic, ZIP)
4.76k
3.08k (x0.65)
Test#1 (Memory)
7.92k
3.4k (x0.43)
TOTAL
56.29k
33.38k (x0.59)

Multithread

i7-7700HQ

i3-7100U
Test#1 (Integers)
93.11k
34.95k (x0.38)
Test#2 (FP)
89.03k
33.53k (x0.38)
Test#3 (Generic, ZIP)
21.29k
7.74k (x0.36)
Test#1 (Memory)
4.9k
3.38k (x0.69)
TOTAL
208.33k
79.6k (x0.38)

Performance/W
i7-7700HQ
i3-7100U
Test#1 (Integers)
2069 points/W
2330 points/W
Test#2 (FP)
1978 points/W
2235 points/W
Test#3 (Generic, ZIP)
473 points/W
516 points/W
Test#1 (Memory)
109 points/W
225 points/W
TOTAL
4629 points/W
5307 points/W

Performance/GHz
i7-7700HQ
i3-7100U
Test#1 (Integers)
6124 points/GHz
5606 points/GHz
Test#2 (FP)
5354 points/GHz
5606 points/GHz
Test#3 (Generic, ZIP)
1251 points/GHz
1282 points/GHz
Test#1 (Memory)
2083 points/GHz
1415 points/GHz
TOTAL
14813 points/GHz
13909 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4